abstracted out truncate

Author: monfera

Diff for: src/lib/float32_truncate.js

@@ -0,0 +1,23 @@
+/**
+* Copyright 2012-2016, Plotly, Inc.
+* All rights reserved.
+*
+* This source code is licensed under the MIT license found in the
+* LICENSE file in the root directory of this source tree.
+*/
+
+'use strict';
+
+/**
+ * Truncate a Float32Array to some length. A wrapper to support environments
+ * (e.g. node-webkit) that do not implement Float32Array.prototype.slice
+ */
+module.exports = function truncate(float32ArrayIn, len) {
+    if(Float32Array.slice === undefined) {
+        var float32ArrayOut = new Float32Array(len);
+        for(var i = 0; i < len; i++) float32ArrayOut[i] = float32ArrayIn[i];
+        return float32ArrayOut;
+    }
+
+    return float32ArrayIn.slice(0, len);
+};

Diff for: src/traces/pointcloud/convert.js

@@ -12,6 +12,7 @@ var createpointcloud = require('gl-pointcloud2d');
 var isNumeric = require('fast-isnumeric');
 
 var str2RGBArray = require('../../lib/str2rgbarray');
+var truncate = require('../../lib/float32_truncate');
 var getTraceColor = require('../scatter/get_trace_color');
 
 var AXES = ['xaxis', 'yaxis'];
@@ -67,20 +68,6 @@ proto.handlePick = function(pickResult) {
     };
 };
 
-/**
- * Truncate a Float32Array to some length. A wrapper to support environments
- * (e.g. node-webkit) that do not implement Float32Array.prototype.slice
- */
-function truncate(float32ArrayIn, len) {
-    if(Float32Array.slice === undefined) {
-        var float32ArrayOut = new Float32Array(len);
-        for(var i = 0; i < len; i++) float32ArrayOut[i] = float32ArrayIn[i];
-        return float32ArrayOut;
-    }
-
-    return float32ArrayIn.slice(0, len);
-}
-
 proto.update = function(options) {
 
     this.textLabels = options.text;

Diff for: src/traces/scattergl/convert.js

@@ -19,6 +19,7 @@ var Lib = require('../../lib');
 var Axes = require('../../plots/cartesian/axes');
 var ErrorBars = require('../../components/errorbars');
 var str2RGBArray = require('../../lib/str2rgbarray');
+var truncate = require('../../lib/float32_truncate');
 var formatColor = require('../../lib/gl_format_color');
 var subTypes = require('../scatter/subtypes');
 var makeBubbleSizeFn = require('../scatter/make_bubble_size_func');
@@ -218,20 +219,6 @@ function _convertColor(colors, opacities, count) {
     return result;
 }
 
-/**
- * Truncate a Float32Array to some length. A wrapper to support environments
- * (e.g. node-webkit) that do not implement Float32Array.prototype.slice
- */
-function truncate(float32ArrayIn, len) {
-    if(Float32Array.slice === undefined) {
-        var float32ArrayOut = new Float32Array(len);
-        for(var i = 0; i < len; i++) float32ArrayOut[i] = float32ArrayIn[i];
-        return float32ArrayOut;
-    }
-
-    return float32ArrayIn.slice(0, len);
-}
-
 /* Order is important here to get the correct laying:
  * - lines
  * - errorX